Car dock?

Can't find any good info on what kind of car dock will be available. My wife might get my Photon if I like the ET4G, and one of the best things about the Photon is the absolutely outstanding car dock. From what I see so far, Samsung isn't even matching the mediocre dock for the Epic, since it looks like the ET4G dock doesn't even have audio out.

I was not pleased with their dock for my Nexus S, ended up just going universal route. The Nexus S dock said it had integrated charging; ie, you manually plug in a car charger. :| Also, it should go into dock mode; it never did.